map -package:containers -package:basement -package:conduit -is:exact -package:case-insensitive -package:insert-ordered-containers -package:aeson -package:dense-linear-algebra -package:foldl -package:invertible -package:filepath -package:os-string -package:Cabal-syntax -package:psqueues -package:ghc -package:vector -package:vector-stream -package:regex-tdfa -package:monoidal-containers -package:incipit-base package:stm-containers
Hash-table, based on STM-specialized Hash Array Mapped Trie.
Bidirectional map. Essentially, a bijection between subsets of its two
argument types.
For one value of the left-hand type this map contains one value of the
right-hand type and vice versa.
A multimap, based on an STM-specialized hash array mapped trie.
Basically it's just a wrapper API around
Map key
(Set value).